EP1158897B1 - Procede pour determiner la capacite de charge d'un etre humain - Google Patents

Procede pour determiner la capacite de charge d'un etre humain Download PDF

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Publication number
EP1158897B1
EP1158897B1 EP00916909A EP00916909A EP1158897B1 EP 1158897 B1 EP1158897 B1 EP 1158897B1 EP 00916909 A EP00916909 A EP 00916909A EP 00916909 A EP00916909 A EP 00916909A EP 1158897 B1 EP1158897 B1 EP 1158897B1
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EP
European Patent Office
Prior art keywords
lactate
measured
sub
anaerobic threshold
time
Prior art date
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Expired - Lifetime
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EP00916909A
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German (de)
English (en)
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EP1158897A1 (fr
Inventor
Heiner Stegmann
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Individual
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/22—Ergometry; Measuring muscular strength or the force of a muscular blow
    • A61B5/221—Ergometry, e.g. by using bicycle type apparatus
    • A61B5/222—Ergometry, e.g. by using bicycle type apparatus combined with detection or measurement of physiological parameters, e.g. heart rate
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7235—Details of waveform analysis
    • A61B5/7239—Details of waveform analysis using differentiation including higher order derivatives
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S128/00—Surgery
    • Y10S128/92—Computer assisted medical diagnostics

Definitions

  • the invention relates to methods for determining the load capacity of a People considering the individual anaerobic threshold by non-invasive measurement of lactate concentrations depending on work done.
  • lactate concentration of the blood plasma becomes predominant in the loading phase determined by the lactate influx, d. H. due to the predominantly diffusive lactate flow from muscle to blood plasma. This influx is driven by the load occurring concentration gradient between lactate producing muscle tissue and Blood plasma.
  • lactate efflux predominates, d. H. the lactate elimination from the blood plasma.
  • the so-called individual anaerobic threshold be determined, which is a fixed, uniquely reproducible value is.
  • the "individual anaerobic threshold” is also for physiological parameters like assessment of physical performance, exercise blood pressure and coronary heart disease of importance.
  • the individual anaerobic threshold is determined by lactic acid determination in the Blood, the changes of the lactic acid portion depending on the work done per unit of time is measured.
  • the individual anaerobic threshold according to Stegmann can not only be determined by continuous lactate measurement from human blood, but also from the respiratory measurements of the respiratory minute volume, the O 2 content of the respiratory minute volume and the CO 2 content of the respiratory minute volume determine (EP 0 742 693 B1).
  • the present invention is based on the problem, a method of the above so-called type so that there is the possibility of the lactate concentration change to gain more characteristic data for humans.
  • Will the slope of the Lactate concentration-time curve, also called lactate accumulation rate is, upon reaching the individual anaerobic threshold (IAT) by the state of a Organism characterized in which a continuous load with that of the individual anaerobic threshold corresponding achievement does not lead to a growing increase, but to a suspension of the lactate concentration-time curve at the maximum level leads, then is, if the individual anaerobic threshold corresponding Performance is exceeded, a rapid increase in lactate concentration in the blood plasma determine.
  • the change in the lactate concentration measured as a function of the time load can be a stationary bike or for example a treadmill or a other device or an arrangement are used, which also in the determination of individual anaerobic threshold (IAT).
  • the devices are over Lines connected to a data processing system, so the per unit time to determine the work done. Furthermore, there is a time-dependent review of Blood of man.
  • the corresponding blur values, i. their for the lactate concentration Characteristic values such as lactic acid content of the data processing system also supplied.
  • the data processing system calculates a measurement curve, in accordance with FIG. 1, the concentration C of lactate in mmol compared the time t is preferably plotted in minutes.
  • the corresponding trace is provided in Fig. 1 with the reference numeral 22.
  • the load increase can be stepped (curve 24) or continuously (curve 26). In that regard, however, is sufficient referenced measuring methods.
  • the change in concentration of the lactate is determined not only up to the anaerobic individual threshold IAT, ie beyond the continuous load limit, but also under greater load, in which a rapid increase in the lactate concentration in the blood plasma is detectable.
  • a stepwise (FIG. 2) or continuous load increase (FIG. 3) ie in an analogous manner, as is known from the determination of the individual threshold IAT.
  • the gradients are then the lactate concentration time curve in each of the individual anaerobic threshold IAT t corresponding time IAT as determined in other times such as t x> t IAT, and optionally up to the load end of t E of the trace 22nd
  • the corresponding gradients can be evaluated as a lactate accumulation rate, it being apparent that the lactate accumulation rates increase above the time t IAT , ie the slope tan ⁇ IAT at a time t IAT is less than the slope tan ⁇ x at a time t x > t IAT which in turn is smaller than the slope t ⁇ E at a time t E at the end of loading.
  • Characteristic reproducible values of the burdened human can then be obtained from the lactate performance curve 22 above the individual anaerobic threshold IAT if the lactate accumulation rate is adjusted by the individual anaerobic threshold, ie the difference ⁇ A between the slope tan ⁇ x and the slope tan ⁇ IAT is formed. This difference is a measure of the systemic disturbance of the lactate concentration above the continuous load corresponding to the individual anaerobic threshold and thus individually characteristic of the individual.
  • the performance or resilience of humans can be seen both from the Fig. 1 to be taken lactate power curve and a characteristic curve 28 taken where the change in lactate accumulation rate is ⁇ A versus power L is applied.
  • the characteristic curve 28 can with a standard curve 30, with a curve recorded by the same person at another time or with be compared to another people's trajectory, thus providing statements about the To derive performance and / or load capacity and possibly normalized values.
  • FIG. 4 shows the correlation between different powers L 1 x and L 2 x , which are provided in the exercise test for the same lactate accumulation rate ⁇ A adjusted by the individual aerobic threshold.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Physiology (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Cardiology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)

Claims (5)

  1. Procédé pour déterminer la résistance d'un individu en tenant compte du seuil anaérobie individuel par mesure non traumatique des concentrations de lactate en fonction du travail fourni, comprenant les étapes suivantes :
    mesure de la modification de la concentration de lactate en fonction du temps, au-delà du seuil anaérobie,
    adaptation d'une courbe de mesure aux valeurs mesurées ainsi acquises, dans laquelle la concentration de lactate est portée par rapport au temps,
    détermination d'une première pente de la courbe de mesure dans un instant tIAt correspondant au seuil anaérobie individuel,
    détermination d'au moins une autre pente sur la courbe de mesure à instant tx, sachant que tx > tIAt et
    soustraction de la deuxième pente de la première pente pour déterminer une différence ΔA.
  2. Procédé selon la revendication 1,
    caractérisé en ce
    que des différences ΔAx avec x = 1, 2, ... sont portées en fonction du travail, et que les courbes de mesure ainsi formées sont comparées avec des courbes de mesure normées, des courbes de mesure de différents individus ou des courbes de mesure du même individus pour différents temps d'effort.
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce que les courbes de mesure sont mesurées lors d'une modification par paliers du travail de l'individu.
  4. Procédé selon la revendication 1 ou 2,
    caractérisé en ce que les courbes de mesure sont mesurées lors d'une modification continue du travail de l'individu.
  5. Procédé selon l'une de revendications précédentes,
    caractérisé en ce qu'on utilise comme seuil anaérobie individuel le seuil défini selon Stegmann comme paramètre de soustraction pour déterminer la différence ΔA.
EP00916909A 1999-03-08 2000-03-08 Procede pour determiner la capacite de charge d'un etre humain Expired - Lifetime EP1158897B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19909852 1999-03-08
DE19909852A DE19909852A1 (de) 1999-03-08 1999-03-08 Verfahren zur Bestimmung der Belastbarkeit eines Menschen
PCT/EP2000/002030 WO2000053091A1 (fr) 1999-03-08 2000-03-08 Procede pour determiner la capacite de charge d'un etre humain

Publications (2)

Publication Number Publication Date
EP1158897A1 EP1158897A1 (fr) 2001-12-05
EP1158897B1 true EP1158897B1 (fr) 2005-01-26

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ID=7899908

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EP00916909A Expired - Lifetime EP1158897B1 (fr) 1999-03-08 2000-03-08 Procede pour determiner la capacite de charge d'un etre humain

Country Status (6)

Country Link
US (1) US6899676B1 (fr)
EP (1) EP1158897B1 (fr)
AT (1) ATE287663T1 (fr)
AU (1) AU3809400A (fr)
DE (2) DE19909852A1 (fr)
WO (1) WO2000053091A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10324904B4 (de) * 2003-05-30 2013-03-07 Siemens Aktiengesellschaft Vorrichtung zur Trainingseinstellung im Sport, insbesondere im Laufsport
DE10333075B4 (de) * 2003-07-21 2011-06-16 Siemens Ag Verfahren und Vorrichtung zur Trainingseinstellung im Sport, insbesondere im Laufsport
DE102004052083A1 (de) * 2004-10-26 2006-05-04 Nuske, Andreas Digitales, elektronisches Diagnose-Verfahren zur unblutigen Lactat-Leistungsbestimmung und einer mobilen Messvorrichtung zur elektronischen Durchführung
DE102007052776B4 (de) * 2007-11-02 2011-02-24 Jerichow, Ulrich, Dr. Verfahren zur Steuerung und/oder Regelung einer Trainings und/oder Rehabilitationseinheit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4622980A (en) * 1984-11-01 1986-11-18 Horst E. Kunig Method and apparatus for determining of stress condition of a subject
DE4406286A1 (de) * 1994-02-26 1995-08-31 Stegmann Heiner Dr Med Verfahren zur Bestimmung der individuellen anaeroben Schwelle eines Menschens
AT407950B (de) * 1999-05-25 2001-07-25 Hoffmann La Roche Verfahren und vorrichtung zur ermittlung eines von respiratorischen messdaten abhängigen indikators

Also Published As

Publication number Publication date
EP1158897A1 (fr) 2001-12-05
DE19909852A1 (de) 2000-09-14
AU3809400A (en) 2000-09-28
ATE287663T1 (de) 2005-02-15
DE50009357D1 (de) 2005-03-03
WO2000053091A1 (fr) 2000-09-14
US6899676B1 (en) 2005-05-31

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